21164279808

Names of 21164279808

• Cardinal: 21164279808 can be written as Twenty-one billion, one hundred sixty-four million, two hundred seventy-nine thousand, eight hundred eight.

Scientific notation

• Scientific notation: 2.1164279808 × 10¹⁰

Factors of 21164279808

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 351

Divisors of 21164279808

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 29 32 42 48 56 58 64 71 84 87 96 112 116 128 142 168 174 192 203 213 224 232 239 256 284 336 348 384 406 426 448 464 478 497 512 568 609 672 696 717 768 812 852 896 928 956 994 1024 1136 1218 1344 1392 1434 1491 1536 1624 1673 1704 1792 1856 1912 1988 2048 2059 2272 2436 2688 2784 2868 2982 3072 3248 3346 3408 3584 3712 3824 3976 4118 4544 4872 5019 5376 5568 5736 5964 6144 6177 6496 6692 6816 6931 7168 7424 7648 7952 8236 9088 9744 10038 10752 11136 11472 11928 12354 12992 13384 13632 13862 14336 14413 14848 15296 15904 16472 16969 18176 19488 20076 20793 21504 22272 22944 23856 24708 25984 26768 27264 27724 28826 29696 30592 31808 32944 33938 36352 38976 40152 41586 43008 43239 44544 45888 47712 48517 49416 50907 51968 53536 54528 55448 57652 59392 61184 63616 65888 67876 72704 77952 80304 83172 86478 89088 91776 95424 97034 98832 101814 103936 107072 109056 110896 115304 118783 122368 127232 131776 135752 145408 145551 155904 160608 166344 172956 178176 183552 190848 194068 197664 203628 207872 214144 218112 221792 230608 237566 244736 254464 263552 271504 291102 311808 321216 332688 345912 356349 367104 381696 388136 395328 407256 415744 428288 436224 443584 461216 475132 489472 492101 508928 527104 543008 582204 623616 642432 665376 691824 712698 734208 763392 776272 790656 814512 856576 887168 922432 950264 984202 1017856 1054208 1086016 1164408 1247232 1284864 1330752 1383648 1425396 1468416 1476303 1526784 1552544 1581312 1629024 1713152 1774336 1844864 1900528 1968404 2108416 2172032 2328816 2569728 2661504 2767296 2850792 2952606 3053568 3105088 3162624 3258048 3426304 3444707 3548672 3689728 3801056 3936808 4216832 4344064 4657632 5139456 5323008 5534592 5701584 5905212 6210176 6325248 6516096 6889414 7097344 7379456 7602112 7873616 8688128 9315264 10278912 10334121 10646016 11069184 11403168 11810424 12420352 12650496 13032192 13778828 14194688 14758912 15204224 15747232 17376256 18630528 20668242 21292032 22138368 22806336 23620848 24840704 26064384 27557656 29517824 30408448 31494464 34752512 37261056 41336484 42584064 44276736 45612672 47241696 49681408 52128768 55115312 60816896 62988928 74522112 82672968 88553472 91225344 94483392 99362816 104257536 110230624 121633792 125977856 149044224 165345936 182450688 188966784 220461248 243267584 251955712 298088448 330691872 364901376 377933568 440922496 503911424 661383744 729802752 755867136 881844992 1007822848 1322767488 1511734272 1763689984 2645534976 3023468544 3527379968 5291069952 7054759936 10582139904 21164279808
• Sum of all divisors σ(n): 67931136000
• Sum of proper divisors (its aliquot sum) s(n): 46766856192
• 21164279808 is an abundant number, because the sum of its proper divisors (46766856192) is greater than itself. Its abundance is 25602576384

Bases of 21164279808

• Binary: 10011101101011111010100100000000000₂
• Hexadecimal: 0x4ED7D4800
• Base-36: 9Q0NYTC

Squares and roots of 21164279808

• 21164279808 squared (21164279808²) is 447926739791316516864
• 21164279808 cubed (21164279808³) is 9480046854428630291601646682112
• The square root of 21164279808 is 145479.4824296543
• The cube root of 21164279808 is 2766.0997125641

Scales and comparisons

• 21,164,279,808 seconds is equal to 672 years, 49 weeks, 5 days, 22 hours, 36 minutes, 48 seconds.
• To count from 1 to 21,164,279,808 would take you about one thousand, three hundred forty-five years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 21164279808 cubic inches would be around 230.5 feet tall.

Recreational maths with 21164279808

• 21164279808 backwards is 80897246112
• 21164279808 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21164279808's digits is 48
• More coming soon!